EP 1634971 A2 20060315 - Application of high strength titanium alloys in last stage turbine buckets having longer vane lengths
Title (en)
Application of high strength titanium alloys in last stage turbine buckets having longer vane lengths
Title (de)
Anwendung hochfester Titanlegierungen im letzten Teil der Turbinenschaufeln mit längeren Schaufellängen
Title (fr)
Application d'alliages de titane à haute résistance mécanique à des aubes de turbine de dernière étape ayant des longueurs de palette plus grandes
Publication
Application
Priority
US 91943504 A 20040817
Abstract (en)
A new high-strength titanium-based alloy bucket specifically suited for use as the last stage buckets in steam turbine engines having vane lengths of about 40 inches or greater and the method for forming such bucket. Exemplary buckets according to the invention are formed from a titanium-based alloy containing up to about 6.25% aluminum; (b) about to 3.5% vanadium; (c) about 2.25% tin, (d) about 2.25% zirconium, (e) about 1.75% molybdenum, (f) about 2.25% chromium, (g) about 0.7% silicon; and (h) about 2.3% iron, with the balance being titanium. After forming, the bucket can be heat treated to provide stress relief and then machined in a conventional manner.
IPC 8 full level
C22C 14/00 (2006.01); C22F 1/16 (2006.01); F01D 5/00 (2006.01); F03B 1/02 (2006.01)
CPC (source: EP US)
C22C 14/00 (2013.01 - EP US); C22F 1/183 (2013.01 - EP US); F01D 5/28 (2013.01 - EP US); F05D 2220/3215 (2013.01 - EP US); F05D 2300/133 (2013.01 - EP US); Y02T 50/60 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1634971 A2 20060315; EP 1634971 A3 20060405; CN 1737339 A 20060222; CN 1737339 B 20110706; JP 2006070363 A 20060316; US 2006039794 A1 20060223; US 7195455 B2 20070327
DOCDB simple family (application)
EP 05254712 A 20050728; CN 200510091748 A 20050817; JP 2005235636 A 20050816; US 91943504 A 20040817